CMV: opposing the actions the actions of Israel's government is not antisemitic, but opposing Israel's entire existence usually is
I am someone who believes Israel's government is doing many terrible things that violate the rights of Palestinians and don't really help it's standing on the global stage.
That said, opposing Israel's entire existence is usually antisemitic. I say that because most of the people who I talk to say that Israel shouldn't exist because it's a state where citizenship is given based heavily on ethnicity, but don't appear to take issue with other states that are very ethnically homogenous. For instance, as is true with ethnically Jewish people in relation to Israel, people that can trace part of their ancestry to Ireland through a grandparent can more easily immigrate to Ireland, ethnic Germans from the former Soviet Union and Eastern bloc can also immigrate more easily to Germany, immigration to Armenia is likewise easier for people of Armenian heritage, etc. The only exception I can think of where opposition to Israel's existence is not antisemitic is if someone opposes the concept of nation states in general and/or only favors states that are based purely colorblind. It's similar to how one can call out someone who happens to not be white for committing a crime, yet if one keeps calling out people who aren't white for committing crimes, then their motives for calling them out are probably racist.
I'm not completely sure exactly what would change my mind about this, but it would help me if someone could provide for me a logical explanation as to why Israel existing, even in the form of the two-state solution where Israel keeps its ethnic majority and Palestine keeps its ethnic majority, is meaningfully different from other ethnically homogenous nations, many of which treat difference races difference when it comes to immigration and such.
Anyway, I look forward to your replies:)
Edit: someone pointed out that it's also possible for someone to oppose Israel's existence, not due to antisemitism specifically, but because of anti-Americanism. My mind isn't entirely changed, but I think in a few cases, that can be the main motivating factor, particularly when it comes to people who are very opposed to American imperialism in general.